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Article: A combined technique of photo-doping and MOCVD for the development of heterogeneous photo-Fenton catalyst
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TitleA combined technique of photo-doping and MOCVD for the development of heterogeneous photo-Fenton catalyst
 
AuthorsLam, FLY3
Hu, X3
Lee, TMH2
Chan, KY1
 
KeywordsComposites
Environment
Photo-Fenton catalysts
Porous media
Remediation
 
Issue Date2009
 
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/seppur
 
CitationSeparation And Purification Technology, 2009, v. 67 n. 2, p. 233-237 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.seppur.2009.03.010
 
AbstractA novel technique combining photo-doping and metal-organic chemical vapor deposition (MOCVD) is used to synthesize heterogeneous iron (Fe) catalyst supported on TiO2/SiO2 substrate. The TiO2/SiO2 substrate is obtained through MOCVD method to disperse TiO2 onto silica gel and then iron is coated onto the substrate by photo-doping. The developed catalyst, Fe/TiO2/SiO2, is characterized by various techniques, including ICP-OES, XRD, XPS, and physisorption. It is found that the doped ferric ion is selectively deposited on the TiO2 layer of the catalyst surface without any significant change of the BET specific surface area. XPS spectrum further proves that the doped iron is in trivalent form and mainly distributed on the catalyst surface. The developed catalysts are evaluated in the photo-Fenton degradation on a dye pollutant, Orange II. Complete discoloration and 80% of mineralization can be achieved. A calcination step is required after the photo-doping in order to minimize the iron leaching during the photo-Fenton reaction. © 2009 Elsevier B.V. All rights reserved.
 
ISSN1383-5866
2012 Impact Factor: 2.894
2012 SCImago Journal Rankings: 1.219
 
DOIhttp://dx.doi.org/10.1016/j.seppur.2009.03.010
 
ISI Accession Number IDWOS:000266641400020
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorLam, FLY
 
dc.contributor.authorHu, X
 
dc.contributor.authorLee, TMH
 
dc.contributor.authorChan, KY
 
dc.date.accessioned2011-03-28T09:23:49Z
 
dc.date.available2011-03-28T09:23:49Z
 
dc.date.issued2009
 
dc.description.abstractA novel technique combining photo-doping and metal-organic chemical vapor deposition (MOCVD) is used to synthesize heterogeneous iron (Fe) catalyst supported on TiO2/SiO2 substrate. The TiO2/SiO2 substrate is obtained through MOCVD method to disperse TiO2 onto silica gel and then iron is coated onto the substrate by photo-doping. The developed catalyst, Fe/TiO2/SiO2, is characterized by various techniques, including ICP-OES, XRD, XPS, and physisorption. It is found that the doped ferric ion is selectively deposited on the TiO2 layer of the catalyst surface without any significant change of the BET specific surface area. XPS spectrum further proves that the doped iron is in trivalent form and mainly distributed on the catalyst surface. The developed catalysts are evaluated in the photo-Fenton degradation on a dye pollutant, Orange II. Complete discoloration and 80% of mineralization can be achieved. A calcination step is required after the photo-doping in order to minimize the iron leaching during the photo-Fenton reaction. © 2009 Elsevier B.V. All rights reserved.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationSeparation And Purification Technology, 2009, v. 67 n. 2, p. 233-237 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.seppur.2009.03.010
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.seppur.2009.03.010
 
dc.identifier.epage237
 
dc.identifier.hkuros162410
 
dc.identifier.isiWOS:000266641400020
 
dc.identifier.issn1383-5866
2012 Impact Factor: 2.894
2012 SCImago Journal Rankings: 1.219
 
dc.identifier.issue2
 
dc.identifier.scopuseid_2-s2.0-67349136102
 
dc.identifier.spage233
 
dc.identifier.urihttp://hdl.handle.net/10722/132372
 
dc.identifier.volume67
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/seppur
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofSeparation and Purification Technology
 
dc.relation.referencesReferences in Scopus
 
dc.subjectComposites
 
dc.subjectEnvironment
 
dc.subjectPhoto-Fenton catalysts
 
dc.subjectPorous media
 
dc.subjectRemediation
 
dc.titleA combined technique of photo-doping and MOCVD for the development of heterogeneous photo-Fenton catalyst
 
dc.typeArticle
 
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<description.abstract>A novel technique combining photo-doping and metal-organic chemical vapor deposition (MOCVD) is used to synthesize heterogeneous iron (Fe) catalyst supported on TiO2/SiO2 substrate. The TiO2/SiO2 substrate is obtained through MOCVD method to disperse TiO2 onto silica gel and then iron is coated onto the substrate by photo-doping. The developed catalyst, Fe/TiO2/SiO2, is characterized by various techniques, including ICP-OES, XRD, XPS, and physisorption. It is found that the doped ferric ion is selectively deposited on the TiO2 layer of the catalyst surface without any significant change of the BET specific surface area. XPS spectrum further proves that the doped iron is in trivalent form and mainly distributed on the catalyst surface. The developed catalysts are evaluated in the photo-Fenton degradation on a dye pollutant, Orange II. Complete discoloration and 80% of mineralization can be achieved. A calcination step is required after the photo-doping in order to minimize the iron leaching during the photo-Fenton reaction. &#169; 2009 Elsevier B.V. All rights reserved.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong
  2. Hong Kong Polytechnic University
  3. Hong Kong University of Science and Technology